Respirator.



F. NIESSNER.

RESPIRATOR.

APPLICATION FILED Aue.26. 1915.

1,175,799. Patented Mar. 14, 1916.

Z SHEETSSHEET I.

Elm-.El

THE COLUMBIA PLANOGRAPH co., WASHINGTON, D. C.

F. NIESSNER.

RESPIRATOR.

\ APPLlCATlON FILED AUG-26, 1915. w

1,175,799. Patented Mar. 14:, 1916.

2 SHEETSSHEET 2- awn/newton THE COLUMBlA PLANOGRAPH .60., WASHINGTON, 1:. cv

TINTTED STATES PATENT @FFTCE.

FERDINAND NIESSNER, OF JOHNSTOWN, PENNSYLVANIA.

RESPIRATOR.

Application filed August 26, 1915.

To all whom it may concern Be it known that I, FERDINAND NIEssNuR, a citizen of the United States, residing at Johnstown, in the county of Cambria and State of Pennsylvania, have invented certain new and useful Improvements in Respirators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 7

This invention relates to an improvement in respirators designed for convenient attachment to provide a filtering medium for the nose and mouth of the wearer to form a barrier against the-inhalation of deleterious agents. 7

The main object of the invention is to provide a simply constructed and eiiicient device of this character which is designed to be inserted within the nostrils of the wearer and automatically and yieldably held in operative position therein.

Another object of the invention is to provide a device of this character in which the mouth and nose protectors are hingedly connected, and the nostril engaging tubes are reliably held in positive relation to each other and yet are movable toward and away from each other.

lVith these and numerous other objects in view, my invention consists of certain novel features of construction and the combination and arrangement of parts to be hereinafter described and claimed.

In the accompanyingdrawings: Figure 1 represents a side elevation of this improved respirator; Fig. 2 is a vertical central section thereof; Fig. 3, is a plan view thereof; Fig. 4 is a front elevation of the device; Fig. 5 is a rear elevation thereof; Fig. 6 is a transverse section taken on the line 66 of Fig. 4; Fig. 7 is a similar view taken on the line 7-7 of Fig. 4; Fig. Sis a detail perspective view of the nostril engaging member with the parts thereof separated.

In the embodiment illustrated, two tubular nostril engaging members are shown in the form of truncated cones 1 and 2 pivotally connected intermediatelyof their ends, said tubes being shown'provided at one side at a point spaced from the larger ends thereof with apertured lugs forming hinge members, the tube 2 being shown with two longitudinally arranged laterally spaced lugs 3 between which the single Specification of Letters Patent.

Patented Mar. 14, 1916.

Serial No. 47,438.

apertured lug 4 on the other tube 1 is deslgned to fit and be connected theretoby a pintle 5. A springv 6 is shown arranged between the larger ends of the tube outside the pivotal connection thereof, said spring being here shown substantially U-shaped in form with a coil 7 formed midway the ends thereof and with the free ends of its arms bent laterally outward to form tube engaging fingers 8, which are here shown inserted in sockets 9 in said tubes which provide for the swinging of the spring, although it need not be necessarily so connected. This spring exerts its tension to force the larger ends of the tubes apart, thereby causing the smaller ends to move toward each other as shown in Fig. 3, the smaller ends being designed to be inserted in the nostrils of the wearer and yieldably held in operative position by this spring 6. Arranged within the tubes 1 and 2 at points spaced inward from the larger ends thereof are laterally extending stops in the form of annular shoulders l0 which are designed to form seats for limiting the inward movement of the filtering medium which is here shown in the form of rolls of gauze 11 which are inserted in the larger ends of the tubes and seat on said shoulders. Vhile the filtering medium is here shown and described as composed of gauze, it is of course to be understood that it may be of any other suitable material for filtering the air drawn into the nostrils and mouth of the wearer. Depending from the lower faces of these tubes 1 and 2,-and extending in planes at right angles to the lugs forming the hinge knuckles, are two apertured ears 12 and 13 forming one knuckle of a hinge 14 which connects the mouth protector 15 to be described with the tubes. The hinge members 14 are here shown in the form of clamps having laterally spaced knuckles 16 at one end between which the ears 12 and 13 on the tubes are designed to be inserted and movably connected by pintles 17 in the usual manner.

Jaws 18 are shown on the ends of the hinge members 14 opposite tothose carrying the knuckles 16, and between which the flexible mouth covering 19 is designed to be clamped, said clamps being disposed laterally apart a sufficient distance to properly connect the covering 19 and hold it suspended from the tubes -1 and 2. This covering-19 may be of any suitable fabric and has a filter containing mouth member carried thereby, here shown carried by two superposed arcuate plates20 and 20 each having an opening 21 arranged midway the ends thereof, and extending from the rear of which and communicating with said opening 21 is a tube 22 for insertion in the mouth of the wearer, and which is here shown threaded into a forwardly extending enlarged member 2 1, between a flange 25 of which and spaced laterally extending lugs 26 the plates 20 and 20 with the fabric 19 between them are clamped. This tube 22 may be of any desired cross sectional contour and is of any suitable length, being provided on its upper and lower faces with transversely extending teeth engaging members, here shown in the form of ribs 23 arranged diametrically opposite each other and which are designed to pass behind the teeth of the user whereby said mouth member may be reliably held in operative position. The front portion 24 which projects beyond plate 20 is larger than the rear portion 22 and has a seat 27 in its inner end for a filtering medium 28 which is designed to strain the air which enters therethrough and passes into the mouth of the user and may be composed of any suitable filtering material, cotton gauze being here shown. A perforated cap 29 is mounted on the outer end of the member 24 to protect the filtering material and retain it in position.

The flap or mouth covering 19 may be of any suitable size, being here shown sufficiently large to extend over the upper lip and down over the chin of the wearer to assist in protecting the lips when worn by a emery grinders, threshing machine operators, foundry men and the like, and is clamped between the plates 20 and 20'. These arcuate tube carrying plates 20 and 20 are designed to conform to the curvature of the mouth of the wearer and'are of alength substantially equal to the length of the mouth ofan ordinary person, and are 'secured'to the flap or fabric covering 19 in any suitable manner, rivets 20" being here shown passed through the plates and fabric. The tubular members 1, 2 and 2 1 are provided respectively on their front ends with perforated removable caps 1 2 and 29 which retain the filtering medium in place and in said member and protect it.

In the use of this improved respiratorthe larger ends of the truncated cone-shaped tubes 1 and 2 are grasped by the fingers of the wearer and pressed toward each other a suflicient distance to properly space the smaller inner ends of said tubes to adapt them to fit within the nostrils of the user.

After being inserted in the nostrils a distance sufiicient to hold themin position with comfort, the outer ends are relea ed and the spring 6 will force them apart nd cause the inner ends to grip the partition of the nose between the nostrils with suflicient force to hold the device in position and yet and is designed to be held by the engagement'of the teeth with the ribs 23, as well as by the closing of the lips onsaid tube. When so positioned, the nostrils and mouth of the wearer will be thoroughly protected against the entrance of any deleterious agents and thus protect the lungs of the wearer.

This device, when constructed as shown and described, is light and comfortable and does not render the breathing more diflicult than when not worn, and may be readily cleaned'by simply removing the filtering gauzeinthe ends of the tubes and replacing it by fresh gauze.

I claim as my invention V 1. A respirator comprising a pair of nostril engaging tubes, a mouth covering flap flexibly connected with said tubes, a tube tril protecting means, and means pivotally,

connecting said flap with said nostril pro tecting means. I r

3. A respirator comprising .a pair of pivotally connected tubes having filters therein, clamp members hingedly connected with said tubes, a mouth covering flap engaged with said clamps, an arcuate plate arranged on said flap in a plane at right angles'to said clamps and having a laterally.

extending mouth tube fastened through the flap, and a filtering medium arranged in said tube.

4. A respirator comprising a pair of pivotally connected tubes having filters therein, clamp members hingedly connected r with said tubes, a mouth covering flap engaged'with said clamps, an arcuate plate arranged on said flap in a plane at right angles to said clamps and having a laterally extending mouth tube fastened through the flap, and a filtering medium arranged in said tube, said mouth tube having transversely extending ribs on the opposed upper and lower faces thereof for engagement by the teeth of the wearer.

'5. A respirator comprising a" pair of nostrll engaging tubes arranged side by side and pivotally connected, an expansion spring mounted between said tubes in advance of their pivotalconnection for yieldably forcing their rear ends toward each other, clamps depending from said tubes and pivotally connected therewith, a flexible mouth covering carried by said clamps, and a mouth tube carried by said covering.

6. A respirator comprising a pair of nostril engaging tubes arranged side by side and pivotally connected, an expansion spring mounted between said tubes in advance of their pivotal connection for yieldably forcing their rear ends toward each other, clamps depending from said tubes and pivotally connected therewith, a flexible mouth covering carried by said clamps, a mouth tube carried by said covering and arranged in a plane below and between said nostril tubes, and perforated caps mounted on said tubes.

7 A respirator comprising a pair of nostril engaging tubes arranged side by side and pivotally connected, an expansion spring mounted between said tubes in advance of their pivotal connection for yieldably forcing their rear ends toward each other, clamps depending from said tubes and pivotally connected therewith, a flexible mouth covering carried by said clamps, a mouth tube carried by said covering and arranged in a plane below and between said nostril tubes, said mouth tube projecting on opposite sides of said covering, the front portion thereof being larger than the rear portion to form a filtering chamber.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FERDINAND NIESSNERJ Witnesses:

W. MILT BROWN, H. W. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

